I have a 1995 Indy 500. I start the sleds at least once a month. The last time i went to start the sled it ran on just 1 cylinder. we thought maybe after we got the suspension back in and let the clutch kick in the 2nd one would fire. Well that didn't happen. it has spark. we took out the air box, clean the carb and put the carb back on without the air box and it was running on 2. then put the air box back in and it ran on 1 again. i took the air box apart and cleaned it. we took the coil off the other 95 indy 500 we have, thinkin that it wasn't getting enough spark under compression but that wasn't the case. could anybody help figure out what the problem might be? i'm willing to try anything right about now.